<https://taiyo-seikotsu.net/blog/686/attachment/%e7%b7%8a%e6%80%a5%e4%ba%8b%e6%85%8b%e5%ae%a3%e8%a8%80%e3%81%ab%e5%af%be%e3%81%99%e3%82%8b%e5%af%be%e5%bf%9c%e3%81%ab/#listItem>
<http://schema.org/position>
"2"^^<http://www.w3.org/2001/XMLSchema#integer>
<https://taiyo-seikotsu.net/blog/686/attachment/%E7%B7%8A%E6%80%A5%E4%BA%8B%E6%85%8B%E5%AE%A3%E8%A8%80%E3%81%AB%E5%AF%BE%E3%81%99%E3%82%8B%E5%AF%BE%E5%BF%9C%E3%81%AB/>